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riscv: dts: sifive unmatched: Expose the board ID eeprom

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Mark it as read-only as it is factory-programmed with identifying
information, and no executable nor configuration:
- eth MAC address
- board model (PCB version, BoM version)
- board serial number
Accidental modification would cause misidentification which could brick
the board, so marking read-only seem like both a safe and non-constraining
choice.

Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
This commit is contained in:
Vincent Pelletier 2021-11-16 23:57:38 +00:00 committed by Palmer Dabbelt
parent ea81b91e4e
commit 8120393b74
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1 changed files with 10 additions and 0 deletions
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arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
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@ -59,6 +59,16 @@
interrupts = <6 IRQ_TYPE_LEVEL_LOW>;
};
eeprom@54 {
compatible = "microchip,24c02", "atmel,24c02";
reg = <0x54>;
vcc-supply = <&vdd_bpro>;
label = "board-id";
pagesize = <16>;
read-only;
size = <256>;
};
pmic@58 {
compatible = "dlg,da9063";
reg = <0x58>;